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+# AWS Tagging Guidelines
+
+To better manage and understand our AWS usage and spending, we are implementing the following tagging guidelines.
+
+## Proposed tags and their meanings
+
+We propose the following 2 tag _keys_:
+
+- `mojaloop/cost_center`
+- `mojaloop/owner`
+
+### `mojaloop/cost_center`
+
+`mojaloop/cost_center` is a breakdown of different resources in AWS by the workstream or project that is incurring the associated costs.
+
+It loosely follows the format of `<account>-<purpose>[-subpurpose]`, where account is something like `oss`, `tips`, or `woccu`.
+> Note: It's likely that most of the resources will be under the `oss` "account", but I managed to find some older resources that fall under the `tips` and `woccu` categories. We also want to plan for future types of resources that might be launched in the future.
+
+Some potential values for `mojaloop/cost_center` are:
+
+- `oss-qa`: Open source QA work, such as the existing dev1 and dev2 environments
+- `oss-perf`: Open source performance work, such as the ongoing performance workstream
+- `oss-perf-poc`: Performance/Architecture POC
+
+We also reserve some special values:
+- `unknown`: This resource was evaluated (perhaps manually, or perhaps by an automated tool), and no appropriate `cost_center` could be determined.
+  - This will allow us to easily filter for the `mojaloop/cost_center:unknown` tags and produce a report
+- `n/a`: This resource incurrs no cost, so we're not really worried about assigning a `cost_center` to it
+  - This can be useful for mass tagging resources that are hard to figure out where the belong, such as EC2 Security Groups
+
+### `mojaloop/owner`
+
+`mojaloop/owner` is a person who is responsible for the managing and shutdown of a given resource.
+
+The goal of this tag is to prevent long running resources that everybody else thinks _someone else_ knows about, but we no longer need. By applying this tag, we will be able to have a list of _who to go to_ in order to ask questions about the resource.
+
+The value can simply be a person's name, all lowercase:
+- `lewis`
+- `miguel`
+- etc.
+
+Once again, we will reserve the following values:
+- `unknown`: This resource was evaluated (perhaps manually, or perhaps by an automated tool), and no appropriate `cost_center` could be determined.
+  - This will allow us to easily filter for the `mojaloop/owner:unknown` tags and see what resources are 'orphaned'
+
+
+## Manual Tagging
+
+We can use the "Tag Editor" in the AWS console to search for untagged resources.
+
+>TODO: insert instructions
+
+1. Log into the AWS Console
+2. Under Resource Groups, select "Tag Editor"
+![](./images/tagging_01.png)
+3. From the tag editor, select a Region (I typically use "All regions"), and Resource Type (I also typically use "All resource types")
+4. Now select "Search Resources", and wait for the resources to appear
+
+You can also search by tags, or the absense of tags to see what resources have not been tagged yet.
+![](./images/tagging_02.png)
+
+5. Once you have a list of the resources, you can select and edit tags for many resources at once!
+6. You can also export a `.csv` file of resources found in your search
+
+
+## Automated Tagging
+
+As we have a firmer grasp of our tagging guidelines, we need to introduce them into our tooling so that all of the grunt work of manual tagging.
+
+At the moment, this will look like introducing tags into:
+1. Rancher - which currently manages our Kubernetes clusters for both QA and Performance purposes
+2. IAC - The upcoming IAC code that will eventually be running our dev environments
+
+
+## Searching for Untagged Resources
+
+> TODO: Lewis will investigate an writing a script for automating the search for untagged resources, that perhaps can send a weekly email or slack notification to AWS owners to investigate and retag instances.
+
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